Forged steel thread gate valve

forged steel threaded gate valves (API 602) feature a forged A105 body, NPT ends and OS&Y rising stem for reliable isolation in high-pressure steam, oil and gas lines. Compact, leak-tight and built for industrial duty.

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Product Details

Forged Steel Threaded Gate Valve

Product Type: Forged Steel Gate Valve (Threaded End)

Series: Forged Steel Valve Series

Finish: Matte black anti-rust coating

Structure: Bolted bonnet, OS&Y rising stem, flexible wedge, solid gate

Operation: Handwheel (multi-turn, isolation only)

1. Size & Pressure Range

Parameter	Range
DN (Metric)	DN15 – DN50 (DN10/DN65 on request)
NPS (Inch)	1/2" – 2"
Pressure Rating	Class 800 (standard), up to Class 1500 / PN16–PN160
Bore Type	Reduced bore (standard), Full bore (optional)
End Connection	NPT threaded (ANSI B1.20.1), BSP/RC optional, SW optional

2. Design Standards

Item	Standard
Design & Manufacture	API 602, BS 5352, ASME B16.34
Face to Face	ASME B16.10 (mfg standard for SW/NPT)
Thread Ends	ASME B1.20.1 (NPT) / ISO 7 / BS 21
Socket Weld Ends	ASME B16.11
Pressure-Temperature	ASME B16.34
Inspection & Test	API 598 / JB/T 9092
Marking	MSS SP-25

3. Working Conditions

Media	Temperature
Water, oil, gas	-29°C to 200°C (soft packing)
Steam / high temp.	-29°C to 425°C (A105 + graphite)
Alloy version	up to 550°C (F11/F22)
Corrosive media	F304 / F316 stainless version

4. Main Dimensions — Class 800 (Reduced Bore, NPT, mm)

NPS	DN	L	d (bore)	H (open)	Handwheel ⌀	Weight (kg)
1/2"	15	79	10.5	158	100	≈2.0
3/4"	20	92	13.0	160	100	≈2.2
1"	25	111	17.5	197	125	≈3.6
1-1/4"	32	120	24.0	228	160	≈5.9
1-1/2"	40	120	29.0	246	160	≈6.9
2"	50	140	36.5	290	180	≈11.0

Dimensions are typical for Class 800 forged threaded gate valves. SW length is same as NPT for this series; final size varies by trim/bore.

5. Material Specification

No.	Component	Carbon Steel	Stainless Steel
1	Body / Bonnet	A105 / A105N	F304 / F316 / L grades
2	Gate (Wedge)	A182 F6a / A105+STL	F304 / F316
3	Seat Ring	A105 + Stellite	SS316 + STL
4	Stem	A182 F6a / 410	F304 / F316
5	Gasket	SS304 + Graphite	SS316 + Graphite
6	Packing	Flexible graphite	PTFE / graphite
7	Bonnet Bolt	A193 B7	A193 B8 / B8M
8	Nut	A194 2H	A194 8 / 8M
9	Gland / Flange	A105 / 410 SS	F304 / F316
10	Handwheel	Malleable iron / steel (black)	Steel